The Blue Nellie showing is located 3.5 kilometres southeast of Ymir, about 700 metres north of the similar Porcupine showings (082FSW063). An old adit is present on the property.

The area is underlain by Lower Cambrian metasediments near the contact with the southern tongue of the Nelson batholith of the Middle to Late Jurassic Nelson Intrusions. The metasediments comprise quartzite, schist, argillite and slate.

Grey-brown quartzites and schistose argillites host northeast trending quartz veins. The main showing on the old Iowna claim hosts a blue and white quartz filled fracture which pinches and swells from a stringer to about 1.2 metres in width. The vein is exposed over 100 metres on surface and also in a northeast trending drift about 48 metres from the portal at 1020 metres elevation. The quartz gangue carries pyrite, sphalerite and galena and both the vein and country rock are impregnated with disseminated pyrite. A second vein occurs at about 854 metres elevation south of the adit and it carries minor pyrite and galena in quartz gangue. The second vein trends about 62 degrees with a dip of 75 degrees northwest. Samples from these veins assayed only trace amounts of gold.